Zobrazeno 1 - 10
of 20
pro vyhledávání: '"L. Survilo"'
Publikováno v:
Chemistry of Natural Compounds. 46:750-755
New derivatives of steroidal 6-ketoximes containing α-chloropyridine neonicotinoid groups characteristic of bioactive compounds were synthesized by formation of oximes of cholestane and stigmastane 3β,5-dihydroxy-6-ketosteroids with O-(2-chloropyri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::229112b2426c81198390517c03b13c66
https://doi.org/10.1007/s10600-010-9732-0
https://doi.org/10.1007/s10600-010-9732-0
Publikováno v:
Chemistry of Natural Compounds. 45:200-204
New esters of 3β,5α,6β-trihydroxysteroids and 3β,5-dihydroxy-6-ketosteroids containing 6-chloropyridine groups characteristic of the alkaloid epibatidine were synthesized by acylation with 6-chloronicotinoylchloride.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2144e1727e492d1d576b6f9231d73fcc
https://doi.org/10.1007/s10600-009-9265-6
https://doi.org/10.1007/s10600-009-9265-6
Publikováno v:
Chemistry of Natural Compounds. 45:205-208
New steroid derivatives containing 6-chloropyridine groups characteristic of the alkaloid epibatidine and neonicotinoid insecticides were synthesized by reacting 3β,5α,6β-trihydroxysteroids or 3β,5-dihydroxy-6ketosteroids with 2-chloro-5-chlorome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a074bee4e5c1332d2d729a8fbe13c53
https://doi.org/10.1007/s10600-009-9266-5
https://doi.org/10.1007/s10600-009-9266-5
Autor:
Yu. V. Trofimov, E. F. Ostretsov, A.V. Mazanik, N. Drozdov, L. Survilo, Mikhail S. Tivanov, Aleksander K. Fedotov
Publikováno v:
physica status solidi (b). 244:1694-1699
In this paper the optical and photoelectrical properties of CdS x Se 1-x films prepared using the screen-printing and sintering technique, were studied. CdCl 2 was used both as a sintering flux and as a doping agent. CuCl was also used as a doping ag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c31570f1adc607c394894b09e14a7a17
https://doi.org/10.1002/pssb.200675137
https://doi.org/10.1002/pssb.200675137
Publikováno v:
Chemistry of Natural Compounds. 39:411-437
Literature data published in 1998-2002 on the chemical synthesis of ecdysteroids and their structural analogs were reviewed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2026cbb832c618bd99815d3f251dcd62
https://doi.org/10.1023/b:conc.0000011114.96205.98
https://doi.org/10.1023/b:conc.0000011114.96205.98
Autor:
V. L. Survilo, N. V. Kovganko
Publikováno v:
Chemistry of Natural Compounds. 38:340-343
22,25-Dideoxyecdysone (1) and 5α-22,25-dideoxyecdysone (1a) were prepared from cholesterol via a new scheme using the key intermediates 3β-chloro-5α-bromo-6-ketone 3, 3β-chloro-7α-bromo-6-ketone 4, and 2,7-dien-6-one 7.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8021a211dba4ec77f6da7a38f6e4332
https://doi.org/10.1023/a:1021673924353
https://doi.org/10.1023/a:1021673924353
Autor:
N. V. Kovganko, V. L. Survilo
Publikováno v:
Chemistry of Natural Compounds. 38:257-263
3β-Chloro-5α,7α-dibromo-6-ketosteroids 5a and 5b are synthesized from β-sitosterol (1a) and cholesterol (1b). Dehydrohalogenation of these forms 7α-bromo-2,4-dien-6-ones (6a-b), 2,4-dien-6-ones (7a-b), and 14α-hydroperoxy-2,4,7-trien-6-ones (8a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01775420c1eb8706b3969b42e1ca9ff7
https://doi.org/10.1023/a:1020432027888
https://doi.org/10.1023/a:1020432027888
Publikováno v:
Chemistry of Natural Compounds. 38:443-446
Steroids 1-16, which are intermediates in the synthesis of ecdysteroids, have been shown to possess insecticidal activity for larvae of the Colorado beetle Leptinotarsa decemlineata. Active growth- and development-regulators were found among them.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d482a24446ff3e78e6787d62f7250722
https://doi.org/10.1023/a:1022159609779
https://doi.org/10.1023/a:1022159609779
Publikováno v:
Chemistry of Natural Compounds. 38:439-442
Structural analogs of ecdysteroids were screened for insecticidal activity for larvae of the Colorado beetle Leptinotarsa decemlineata using a contact-feed method. High activity was found for compounds 3, 6b, 7a, and 9a.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a1ba2cba5a0e5e5985048a086efd2e
https://doi.org/10.1023/a:1022107625708
https://doi.org/10.1023/a:1022107625708
Publikováno v:
Chemistry of Natural Compounds. 37:343-346
13 C NMR spectra have been studied and signals of C atoms have been assigned for 5- and 7-bromo-6-ketosteroids, which are intermediates in the synthesis of ecdysteroids.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eda2146a22b17c4db9371cc4e6231bfb
https://doi.org/10.1023/a:1013722618679
https://doi.org/10.1023/a:1013722618679